strncpystrncpy
strncpy原型char * strncpy(char * dest, char * src, size_t n);作用:将src前n个字符放入deset所指空间中.打印函数如下:void print_string(char * c , int n){ for(int i = 0 ; i < n ; i++) { if(c[i] == '\0') { cout << "NULL"; } cout &
